Engine-cylinder.



W. F. A. BUEHNER.

ENGINE CYLINDER.

APPLICATION FILED NOV. 24. 1915.

1,228,880. PatehtedJune 5,1917

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UNITED STATES PATENT OFFICE.

WILLIAM F. A. BUEHNER, OF NEWARK, NEW JERSEY, ASSIGNOR TO L. WEISCOPF, OF NEW YORK, N. Y.

ENGINE-CYLINDER.

Specification of Letters Patent.

Patented June 5, 1917.

Application filed November 24, 1915. Serial No. 63,204.

To all whom it may concern:

Be it known that I, WILLIAM F. A. Bun-rn Nnn, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Engine-Cylinders, of which the following is a specification.

This invention relates to an engine cylinder construction and the principal object thereof is to provide a cylinder in which means is provided for retaining the spark plug in a compact and efl'icient disposition.

Other objects and aims of the invention, more or less specific than those referred to above, will be in part obvious and in part pointed out in the course of the following description of the elements, combinations, arrangements of parts and applications of principles, constituting the invention; and the scope of' protection contemplated will be indicated in the appended claim.

The accompanying drawing which is to be taken as a part ofthis specification, represents a transverse vertical sectional view through an engine cylinder constructed in accordance with the provisions of this invention.

Referring to the drawing for a detailed description of the structure shown therein, the reference character L indicates the cylinder generally having an inlet port G and an exhausting port H.

The inlet port communicates through a passageway 1 with an opening 2 through which fuel is fed from behind the piston as is customary in two-cycle engines. An opening 3 is provided adjacent the inlet port G which may be normally closed by any suitable means, but which may be opened to facilitate access of cleaning instruments and the like to the inlet port.

The upper end of the cylinder, comprising the explosion chamber is provided with the usual water jacket 4: having an inlet opening 5 and an outlet opening 6. At the upper end of the cylinder, preferably centrally of the end, wall thereof, a small recess or pocket 7 is provided opening into the cylinder and a threaded aperture'S is formed through the wall of said pocket for receiving the spark plug, indicated by dotted lines. The aperture 8 is disposed so as to retain the spark plug in a position transverse to the length of the cylinder. The electrodes at the inner end of the spark plug project into the pocket 7 and stand substantially in the longitudinal axial line of the cylinder. That portion of the spark plug which projects out of the aperture 8 lies compactly adjacent the exterior end surface of the cylinder.

The water jacket 4 preferably extends across a portion of the end of the cylinder and to the exterior of the walls of the pocket 7 so as to cool said walls.

As many changes could be made in this construction without departing from the scope of the following claims, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative only and not in a limiting sense.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is An engine cylinder having a pocket formed interiorly at'the upper end thereof, said pocket being substantially as wide as deep and the upper wall thereof being permanently closed, the side walls of the pocket continuing downwardly and rounding gradually outwardly into the upper end wall of the cylinder Without diminution in the cross-sectional contour of the pocket, the walls of said pocket comprising a projection exteriorly at the end of the cylinder and being formed with an aperture for receiving a spark plug therethrough, said aperture being disposed to retain the spark plug in a position transverse to the length of the cylinder, a spark plug arranged in said aperture so that the electrodes of the spark plug stand substantially in the longitudinal axial line of the cylinder approximately midway of the depth of said pocket, and cooling means for the cylinder extending across the upper end of the cylinder exteriorly thereof and serving as cooling means for the walls of said pocket.

In testimony whereof I affix my signature in the presence of two witnesses.

WILLIAM F. A. BUEHNER.

Witnesses:

LOUIS BRANDWEIN, L. Gnssrom) HANDY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents,

' Washington, D. C. 

